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Unit 3- Lessons 1-4
Electricity and Magnetism
Term | Definition |
---|---|
Electric Charge | Is a property that leads to electromagnetic interactions between the particles that make up matter |
Static Electricity | the buildup of electric charge on an object |
Electrical Conductor | a material through which charges can move freely |
Electrical Insulator | a material through which charges cannot move easily |
Semiconductors | a special class of materials that conduct electrical charge better than electrical insulators but not as well as electrical conductors. |
Electrical Current | the rate of flow of electric charges |
Voltage | is the amount of work required to move each unit of charge between two points |
Resistance | the opposition to the flow of electric charge |
Electric Circuit | closed path through which electrical charges can flow |
Series Circuit | all parts are connected in a row that forms one path for the electric charges to follow |
Parallel Circuit | electric charges have more than one path that they can follow |
Magnet | to describe any material that attracts iron or object made of iron |
Magnetic force | two magnets can push each other apart because of their ends |
Magnetic Field | the area surrounding a magnet where magnetic forces can be detected |
Electromagnetism | results when electric currents and magnetic fields interact with each other |
Solenoid | a coil of wire that carries an electric current, and therefore produces a magnetic field |
Electromagnet | Wrapping a solenoid around an iron core |
Electric Motor | changes electrical energy into mechanical energy into mechanical energy |
electromagnetic induction | using a magnetic field to create an electric current in a wire |
Transformers | use induction to increase or decrease the voltage of alternating current |
Electric generators | use induction to change mechanical energy into electrical energy |